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noun,often capitalized B
Definition of BORDER COLLIE
: any of a breed of medium-sized sheepdogs of British origin noted for their herding abilities
First Known Use of BORDER COLLIE
Breed of long-haired sheepdog that has been used along the English-Scottish border for about 300 years. Usually black and white, it stands about 20 in. (50 cm) and weighs 30–50 lbs (14–23 kg). It is the most popular working sheepdog in the British Isles.